Hi everyone,I want to give an idea for my final project. I will tell you about that project:

I have 3 quadrotors and these quadrotors have ardupilots. One of these will be commander quadrotor and I will control this quadrotor via computer. So i will setup a wireless network. This is first level of my project.Secondly, other 2 quadrotors will controlled by commander quadrotor. For example; when i control commander quadrotor, i will press a key on keyboard. Then, the commander quadrotor will send a command to take off theother quadrotors. Then, when i will press another key, the other quadrotors will land.

Shortly, my project is in this way. All quadrotors have ardupilot(atmega 2560). Now, What equipments do I need for sending and taking commands(xbee, arduino wifi shieldsi,...)? Do you know any sources about computer controlled quadrotor?

For the Computer to Arduino part, see http://playground.arduino.cc/Main/InterfacingWithSoftware. Covers pretty much every programming language you can think of.For the Arduino to Xbee to Xbee to Arduino part, see http://www.billporter.info/2011/05/30/easytransfer-arduino-library/. This library really simplifies communicating between Arduinos over serial, and since Xbees have a serial interface it kinda makes it a done deal. There are a lot of non-Xbee devices that have serial interfaces so an Xbee specifically is not required, but I'll leave it to your discretion as to what might work better. I do know that Xbees are frequently used with RC planes for telemetry so they're kinda tried and true there.For the Arduino to Ardupilot part, see http://arduino.cc/en/Reference/Servo. This would let you send commands to the Ardupilot using the same method that an RC receiver would.